Notices of Memoirs — E. A. Walford— Terraced Slojpes. 465 



Ft. in. 



25. Black Clay 11 



26. Hard Oolitic Freestone, blue-hearted, made up of whitish Oolites in blue 



or brown base 2 



27. Eubble 3 



28. White fine-grained Limestone, with few shells 12 



III. — On some Lacustrine Deposits of the Glacial Period in 

 Middlesex. By Henry Hicks, M.D., F.R.S., F.G-.S. 



IN this paper the author refers to some deposits, consisting of 

 stratified gravels, sands, and clay, varying in thickness from a 

 few feet to over 20 feet, which are spread out over the plateaux of 

 Hendon, Finchley, and Whetstone. They are frequently covered 

 over by the chalky Boulder-clay with northern erratics ; but 

 seldom themselves contain other materials than those which could 

 have been derived from the Tertiary or Cretaceous series in the 

 south-east of England. No marine fossils of contemporaneous age 

 have been found in these deposits, but remains of land animals 

 occur occasionally in and under them. The author has found that 

 their geographical distribution is much greater than has usually 

 been supposed, and he has been led to the conclusion that they must 

 have been deposited in a lake, in the Glacial period, whose waters 

 attained to a height of nearly 400 feet above present 0. D. This 

 lake, he believes, occupied a considerable area in the south-east of 

 England, and spread for some distance south of the Thames, but was 

 dammed up on the east and west. As the lake became gradually 

 reduced in size, lakelets were formed in the Thames Valley, and 

 most of the stratified deposits now found there, except those in the 

 immediate proximity of the present Thames and its tributaries, date 

 back to that period. Man, however, lived in the valley before any 

 of these deposits were thrown down, hence it is that the flint 

 implements and the mammalian remains usually occur under or in 

 the lower parts of the deposits. 



IV. — On the Terraced Hill Slopes of North Oxfordshire, By 

 Edwin A. Walford, F.G.S, 



THE green slopes of many of the minor vales of North Oxford- 

 shire are scored with parallel terraces or terraced banks, 

 frequently of such regularity in depth of step and slope as to 

 present to the mind any other origin for their formation than that 

 of the every-day work of natural forces. They have been described 

 as camps, entrenchments, and amphitheatres, and those of other 

 districts Mr. Gomme has described, and has cited the many theories 

 of their origin, 



Mr. Walford first drew attention to the Oxfordshire and Warwick- 

 shire terraced fields in 1886,^ and dealt at greater length with the 

 subject in 1890,^ 



1 E. A. Walford, " Edge Hill : the Battle and Battlefield," p. 24 (Banbury, 1886). 

 ^ E. A. Walford, "On some Terraced Hill Slopes in the Midlands," Journ. North- 

 ampton Nat. Hist. Soc, January, 1890. 



DECADE IV. VOL. I. NO. X. 30 



